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(190217) -- ABOARD XUELONG, Feb. 17, 2019 (Xinhua) -- Photo taken on Feb. 15, 2019 shows penguins on an iceberg in Antarctica. China's research icebreaker Xuelong, with 126 crew members aboard on the 35th Antarctic research mission, on Thursday local time left the Zhongshan Station on its way back to China. It is expected to arrive in Shanghai in mid-March. (Xinhua/Liu Shiping)